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ketmar error recovery

This commit is contained in:
Adam D. Ruppe 2017-11-22 16:25:35 -05:00
parent 19ca76281d
commit ba58be47b1
1 changed files with 15 additions and 3 deletions
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18
simpleaudio.d
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@ -344,7 +344,7 @@ final class AudioPcmOutThread : Thread {
if(frequencyCounter) if(frequencyCounter)
frequencyCounter--; frequencyCounter--;
if(frequencyCounter == 0) { if(frequencyCounter == 0) {
val = -val; val = -(val);
frequencyCounter = currentSample.frequency / 2; frequencyCounter = currentSample.frequency / 2;
} }
} }
@ -621,8 +621,10 @@ struct AudioOutput {
while(data.length) { while(data.length) {
written = snd_pcm_writei(handle, data.ptr, data.length / 2); written = snd_pcm_writei(handle, data.ptr, data.length / 2);
if(written < 0) if(written < 0) {
throw new AlsaException("pcm write", written); written = snd_pcm_recover(handle, cast(int)written, 0);
if (written < 0) throw new AlsaException("pcm write", written);
}
data = data[written * 2 .. $]; data = data[written * 2 .. $];
} }
} }
@ -1382,6 +1384,16 @@ extern(C):
snd_pcm_sframes_t snd_pcm_avail(snd_pcm_t *pcm); snd_pcm_sframes_t snd_pcm_avail(snd_pcm_t *pcm);
snd_pcm_sframes_t snd_pcm_avail_update(snd_pcm_t *pcm); snd_pcm_sframes_t snd_pcm_avail_update(snd_pcm_t *pcm);
int snd_pcm_recover (snd_pcm_t* pcm, int err, int silent);
alias snd_lib_error_handler_t = void function (const(char)* file, int line, const(char)* function_, int err, const(char)* fmt, ...);
int snd_lib_error_set_handler (snd_lib_error_handler_t handler);
private void alsa_message_silencer (const(char)* file, int line, const(char)* function_, int err, const(char)* fmt, ...) {}
//k8: ALSAlib loves to trash stderr; shut it up
void silence_alsa_messages () { snd_lib_error_set_handler(&alsa_message_silencer); }
shared static this () { silence_alsa_messages(); }
// raw midi // raw midi
static if(is(ssize_t == uint)) static if(is(ssize_t == uint))